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黔南地区岩溶发育,经历过多期地壳运动,地表起伏大,地貌型态多样,突显小水电工程隧洞选线之重要,况且选择采用隧洞输水发电既高效又安全,亦可使生态环境得到保护,本文首先概述黔南地区自然地理及岩溶发育机理,然后从分析隧洞围岩稳定性的影响因素入手,阐述隧洞选线原则并提出对策措施。笔者认为本文对小水电工程各阶段的推进,具有实用价值和借鉴作用。
The development of karst in Qiannan area has experienced many crustal movements with large surface undulation and varied landform types, highlighting the importance of route selection for tunnels in small hydropower projects. In addition, it is both efficient and safe to adopt tunnel water diversion to generate electricity, and ecological environment can also be obtained Protection, this paper first summarizes the natural geography and karst development mechanism in Qiannan area, and then starts with the analysis of the influencing factors on the stability of surrounding rock in tunnels, elaborates the principles of tunnel alignment and puts forward countermeasures. The author thinks that this article has practical value and reference for all stages of small hydropower projects.